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2 * AGPGART module version 0.99
3 * Copyright (C) 1999 Jeff Hartmann
4 * Copyright (C) 1999 Precision Insight, Inc.
5 * Copyright (C) 1999 Xi Graphics, Inc.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
23 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 #include <linux/mutex.h>
30 #include <linux/agp_backend.h>
31 #include <uapi/linux/agpgart.h>
33 #define AGPGART_MINOR 175
36 struct agp_version version
; /* version of the driver */
37 u32 bridge_id
; /* bridge vendor/device */
38 u32 agp_mode
; /* mode info of bridge */
39 unsigned long aper_base
;/* base of aperture */
40 size_t aper_size
; /* size of aperture */
41 size_t pg_total
; /* max pages (swap + system) */
42 size_t pg_system
; /* max pages (system) */
43 size_t pg_used
; /* current pages used */
47 u32 agp_mode
; /* mode info of bridge */
51 * The "prot" down below needs still a "sleep" flag somehow ...
54 off_t pg_start
; /* starting page to populate */
55 size_t pg_count
; /* number of pages */
56 int prot
; /* prot flags for mmap */
59 struct agp_segment_priv
{
66 pid_t pid
; /* pid of process */
67 size_t seg_count
; /* number of segments */
68 struct agp_segment
*seg_list
;
72 int key
; /* tag of allocation */
73 size_t pg_count
; /* number of pages */
74 u32 type
; /* 0 == normal, other devspec */
75 u32 physical
; /* device specific (some devices
76 * need a phys address of the
77 * actual page behind the gatt
82 int key
; /* tag of allocation */
83 off_t pg_start
; /* starting page to populate */
87 int key
; /* tag of allocation */
88 u32 priority
; /* priority for paging out */
92 struct agp_client
*next
;
93 struct agp_client
*prev
;
96 struct agp_segment_priv
**segments
;
99 struct agp_controller
{
100 struct agp_controller
*next
;
101 struct agp_controller
*prev
;
104 struct agp_memory
*pool
;
105 struct agp_client
*clients
;
108 #define AGP_FF_ALLOW_CLIENT 0
109 #define AGP_FF_ALLOW_CONTROLLER 1
110 #define AGP_FF_IS_CLIENT 2
111 #define AGP_FF_IS_CONTROLLER 3
112 #define AGP_FF_IS_VALID 4
114 struct agp_file_private
{
115 struct agp_file_private
*next
;
116 struct agp_file_private
*prev
;
118 unsigned long access_flags
; /* long req'd for set_bit --RR */
121 struct agp_front_data
{
122 struct mutex agp_mutex
;
123 struct agp_controller
*current_controller
;
124 struct agp_controller
*controllers
;
125 struct agp_file_private
*file_priv_list
;
126 bool used_by_controller
;
127 bool backend_acquired
;